Bone china is really because its composition contains bone ash. It is a mixture of 50% bone ash, 25% quartz, feldspar (porcelain stone) and mica. Bone china and porcelain are slightly different in white. Although they are translucent, bone china is more delicate and smooth. Porcelain and bone china Zirconia Ceramic Rings have become synonymous with high quality and expensive.
Material characteristics: the plain burning temperature is about 1200 ℃; High strength; Translucency; The purest is white; Waterproof; Higher baking temperature than ordinary porcelain; It can be glazed at low temperature.
Typical use: This high-quality British porcelain is usually used to produce various tableware. Kaolin can be used to produce various kinds of porcelain, as well as abrasives, refractories, electronic insulators, painting pigments, fillers used to reduce water absorption in plastic molds, etc.
Ceramic materials refer to a kind of inorganic non-metallic materials made of natural or synthetic compounds through forming and high temperature sintering. It has the advantages of high melting point, high hardness, high wear resistance and oxidation resistance. It can be used as structural materials and tool materials. Because ceramics also have some special properties, it can also be used as functional materials. Mechanical properties
Ceramic materials have the best rigidity Glass Coffee Plunger and the highest hardness among engineering materials, most of which are above 1500HV. Ceramic has high compressive strength, but low tensile strength, poor plasticity and toughness.
Thermal characteristics
Ceramic materials generally have high melting point (mostly above 2000 ℃) and excellent chemical stability at high temperatures; The thermal conductivity of ceramics is lower than that of metal materials, and ceramics are also good heat insulation materials. At the same time, the linear expansion coefficient of ceramics is lower than that of metals. When the temperature changes, ceramics have good dimensional stability.
Electrical characteristics
Most ceramics have good electrical insulation, so they are widely used to make insulation devices of various voltages (1kV~110kV). Ferroelectric ceramics (barium titanate BaTiO3) have high dielectric constant and can be used to make capacitors. Under the action of external electric field, ferroelectric ceramics can also change shape and convert electrical energy into mechanical energy (with the characteristics of piezoelectric materials), which can be used as loudspeakers, phonographs, ultrasonic meters, sonar, medical spectrographs, etc. A few ceramics also have the characteristics of semiconductors and can be used as rectifiers.
chemical properties
Ceramic materials are not easy to be oxidized at Glass Ceramic Block high temperatures and have good corrosion resistance to acids, alkalis and salts.
optical characteristics
Ceramic materials also have unique optical properties, which can be used as solid laser materials, optical fiber materials, optical storage devices, etc. Transparent ceramics can be used for high-pressure sodium lamps, etc. Magnetic ceramics (ferrites such as MgFe2O4, CuFe2O4, Fe3O4) have a broad prospect in the application of recording tapes, records, transformer cores, and large computer memory components.
Ceramic materials should be familiar to our product designers. Ceramic materials are widely used in product design, and can even be used on mobile phones. It is really a very good idea, such as Xiaomi ceramic mobile phones. However, not every manufacturer or designer can play with the process and cost involved. Speaking of ceramic materials, what kinds do you know? Do you really know its material properties and typical uses? The following excellent concept industrial design will reveal the product materials, dry goods, types, characteristics and typical uses of commonly used ceramic materials.
1. Alumina - high cost performance (pottery)
Pottery is a porous and opaque ceramic variety. Unlike vitrified translucent porcelain, it needs to be glazed to be waterproof to contain liquid. Although it is not particularly hard, its density is not as high as that of porcelain and porcelain clay, and it is easier to break. The advantage of clay on time Aluminum Nitride Plate is that it is not easy to deform in low temperature burning and has high stability in production and processing.
Material characteristics: generally, the sintering temperature is lower than 1200 ℃; The deformation during baking is smaller than that of porcelain; Various processing technologies; Low cost; It is more fragile than porcelain.
Typical use: The materials can be used in a wide range, from large sanitary wares to cup and dish products.
Macor is a high strength rigid material, which is very white and can be polished. After drilling, grinding, turning and lathing, sawing, polishing and grinding, the processing characteristics of this material are closer to metal than porcelain. The advantages of high strength and high rigidity enable this kind of porcelain to use the processing technology of all the metal materials mentioned above, without the use of expensive molds, and without such frustrating errors as shrinkage and movement in sintering. It can be said to be an ideal Ceramic Disc material for making product models or for low production products that need to minimize production time and costs.
Material characteristics: ordinary metal processing tools can be used for machining and cutting; High temperature resistance up to 1000 ℃; No quenching is required after machining; No holes, no shrinkage.
Typical use: electrical insulator, thermal insulator, component and electronic equipment.
Zirconia is another high performance ceramic material. The reason why zirconia is more widely used than aluminum oxide is that its toughness makes it more resistant to cracking, and zirconia particles are smaller, which makes the surface coating made of zirconia more rounded, and also makes it suitable for making tools, pistons, bearing products, and even gorgeous jewelry products.
Ultra fine zirconia or titanium carbide powder White Zirconia Ceramic can be used in the production of watches. After being pressed and formed, these powders are sintered at 1450 ℃ and polished with diamond sand to make their surfaces more bright and metallic.
Material characteristics: excellent strength and fracture toughness; Super hard, super wear resistance; Excellent chemical stability; High temperature resistance, up to 2400 ℃; compact; Low thermal conductivity (20% of alumina)
Typical use: After these advanced ceramic materials are used for watches, their variable surface smoothness and toughness make zirconia a perfect ceramic raw material for making cutting props and kitchen knives. Zirconia is also used in automobile oxygen sensors due to its excellent conductivity. Other applications include medical and biological applications, pump valves and pump mechanical seals.
Silicon nitride is one of the three hardest materials in the world. Its hardness is only inferior to diamond and hexagonal silicon nitride crystal. Silicon nitride was discovered by a group of engineers in the 1960s when they were looking for materials that could withstand the harsh operating Zirconia Ceramic Rings environment inside jet engines.
Ceramics are very hard, with excellent wear resistance and compression properties. Silicon nitride is one of the most characteristic materials in ceramics. It is dark gray or black, and has a mirror like smooth surface. Science fiction writers in the 1950s had fantasized about flying cups made of silicon nitride.
Silicon nitride has extremely strong pressure resistance. The measured standard pressure it can withstand is 4 million pounds per square inch. It can be roughly equivalent to 80 elephants standing on a sugar cube or pulling 50 cars with a rope with a diameter of 1 inch. Moreover, the surface of silicon nitride is extremely smooth. These characteristics of silicon nitride make it the most conventional material for making bearings.
Material characteristics: friction force is 80% lower than steel; 3 times harder than steel; 60% lighter than steel; The temperature is lower than that of steel during operation.
Typical use: commonly used for main engine of space shuttle, military missile and gyroscope. The super hardness of silicon nitride makes it the main material for Glass Coffee Plunger bearings in products such as ocean fish reels, bicycle racing cars, skates, skateboards, etc.
Quartz is a versatile material. Its optical applications include piezoelectric materials and watches. Quartz also has excellent physical properties and decorative properties. It is one of the most abundant minerals in the world. Its good hardness and beauty make it a material for making worktops, which is one of its main uses.
Material characteristics: extremely high hardness; Good color consistency; No holes; Excellent durability; heat-resisting; Antifouling
Typical use: appearance materials widely used in commercial and household products. In the field of commercial application, it includes wall interlayer, workbench surface, front desk, bar cooking table, experimental table, kitchen cooking table and shower Glass Ceramic Block enclosure.
7. Graphite
Graphite is not a ceramic in strict sense, but because of its physical properties, it is often put into the ceramic family. Graphite is widely used. From a lower level of application, graphite is often used in daily applications such as coins. On the other hand, graphite is often used in some advanced sports goods. In these applications, because graphite has a good ratio of strength and humidity, it has good energy absorption characteristics, which makes graphite occupy a competitive market position in advanced sports equipment (such as tennis rackets and golf clubs).
Graphite is iron gray with metallic luster. Graphite is soft and slippery. Graphite is generally divided into three types: crystalline flake graphite, soft amorphous graphite, and the most commercially valuable synthetic graphite. The layered structure of graphite makes it smooth and distinctive, and makes it an excellent lubricant under high temperature environment.
What is bone china?
2022 11/23